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Brunswick Groove Urethane

Photo and specs courtesy of Brunswick. Reproduced with credit to the maker.

How it moves

Foul lineArrows · 15 ft36 ft · board 131.5° entry
Arcing turn (symmetric core). Dotted is skid, then the turn, then the roll into the pocket. Estimated from the coverstock, finish, core, and differential for a right-handed bowler with medium revs on a house shot. Lane conditions, speed, and layout move all of this.
Brunswick

Groove Urethane

Discontinued
Hook potential3 (est.)3 of 10, estimated

How much the ball wants to hook, 1 (straight, a spare ball) to 10 (the strongest oil-eaters). The maker publishes no number for this ball, so this is estimated from the coverstock, core, finish, and differential.

Coverstock
Urethane Solid
Urethane
Core
Bullet
Factory finish
Solid
Color
Dark Blue / Light Blue
Released
Not listed
USBC
Approved 2005-03-01

Weights and specs

Weight specs have not been entered yet.

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
Solid. Coarse surfaces grip through oil and hook early; fine or polished surfaces skid longer and hook later. Surface changes over games, and a pro shop can take any ball either way with a pad.

Reviews on YouTube

BrunsNickVideos · 2009 · Brunswick Groove Urethane-BrunsNick
BigLeprachaunBowling · 2022 · Radical Double Cross/Brunswick Groove Urethane Ball Comparison

Picked by search for this ball; videos and thumbnails belong to their creators and play on YouTube.